Rock on O-1, ground dust is a pain when taxiing, you will some up with something I'm sure.
here's an idea, how about a pylon or a weapon that can be loaded onto an aircraft, like a smoke cannister, and will emit contails at altitudes? any promise here? We need to know if such a thing can be done for weapons. Bombs have an arming altitude right? Maybe this will work? Then maybe a long slow decay to emit the contrail. I never had luck with weapons when I worked on the v-1.